TABLE 3.

Acute Characteristics of AF Sources

Characteristic	All Patients N = 78	First Ablation N = 40	Prior Failed PVI N = 38	P value
Patients mapped	76	38	38
Patients with detected sources	76/76 (100%)	38/38 (100%)	38/38 (100%)	1.0
No. patients with sources in LA vs RA	71/39	35/16	36/23	–
No. concurrent biatrial AF sources/patient	2.3 ± 0.9	2.1 ± 0.8	2.4 ± 0.9	0.08
No. of LA sources/patient	1.8 ± 0.7	1.8 ± 0.6	1.9 ± 0.8	0.49
No. of RA source/patient	1.1 ± 0.3	1.1 ± 0.3	1.1 ± 0.3	0.96
LA/RA sources, as % of total sources	74.7%/25.3%	76.8%/23.2%	73.8%/26.2%	0.63
Total FIRM-ablation time, all sources (min, Mean ± SD)	16.6 ± 11.7	14.7 ± 11.3	18.5 ± 11.8	0.20

AF = atrial fibrillation; LA = left atrium; RA = right atrium.